o Port where other switches are connected:
This port will receive untagged and tagged frames and send tagged and untagged
frames from many VID, as all traffic from switches should traffic at these ports. Thus,
configuration of these ports should have the following characteristics:
VLAN Identifier Ingress process: untagged frames would
be forwarded to the Port VID VLAN, and tagged frames
are forwarded to the VLAN that is embedded at the frame;
Filtering ingress process: this port should accept both
untagged and tagged frames;
Egress process: egress process should be set to Untag
only frames with Port VLAN identifier.
Thus, configuration of the port where the switches are connected should be as
follows.
o Port mode should be chosen as Trunk
port;
o Port VLAN should be 1;
o For trunk ports, Port Type is not allowed
to be changed from C-Port;
o For trunk ports, Ingress Filtering is not
allowed to be changed from enabled;
o For trunk ports, Ingress Acceptance is
not allowed to be changed from Tagged
and Untagged;
o Egress tagging should be chosen as
Untag Port VLAN;
o Allowed VLANs should be 1, 10, 20, 30;
o No forbidden VLANs should be
configured.
o Port where other switches are connected:
This port will receive untagged and tagged frames and send tagged and untagged
frames from many VID, as all traffic from switches should traffic at these ports. Thus,
configuration of these ports should have the following characteristics:
VLAN Identifier Ingress process: untagged frames would
be forwarded to the Port VID VLAN, and tagged frames
are forwarded to the VLAN that is embedded at the frame;
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